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Gas Leak Detector, Portable Handheld Natural Gas Analyzer PPM Meter High Low Sensitivity Adjustable with LCD Display Loc Portable Gas Leak DetectorThis portable gas leak detector can detect a large number of flammable gases, like methane, naintendvision 
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Handheld CO Detector, 80db Light CO Leak Detector, High Precision, Portable, CO Gas Analyzer with LCD Display, Handheld CO Meter Handheld The Carbon Monoxide Detectors monitor the CO concentration in the air，high precision sensing . Carbon20% Off 
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